This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
for (var i =1; i < 21; i++) { | |
if( i%3 === 0 && i%5 === 0 ) { | |
console.log("FizzBuzz"); | |
} else if ( i%5 === 0 ) { | |
console.log("Buzz"); | |
} else if (i%3 === 0 ) { | |
console.log("Fizz"); | |
} else { | |
console.log(i); | |
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
package sensorData | |
import io.gatling.core.Predef._ | |
import io.gatling.http.Predef._ | |
import io.gatling.jdbc.Predef._ // maybe not needed? | |
import scala.concurrent.duration._ | |
import com.redis._ | |
import io.gatling.redis.feeder._ |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
object Settings { | |
final val Host = "host" | |
final val Protocol = "protocol" | |
object User { | |
final val Name = "username" | |
final val Password = "password" | |
} | |
object Subject { |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
val httpProtocol = http.baseURL("http://localhost:8000") | |
case class TestSetup(repeat: Int, users: InjectionStep, label: String) // <-- config holder | |
val sequentialUserTest = TestSetup(repeat = 100, atOnce(1 user), "sequential 1 user") | |
val oneUserPer4sTest = TestSetup(repeat = 2, constantRate(0.25 userPerSec).during(5 minutes), "1 usr/4s, 2 req / user") | |
val threeCentIn5Mins = TestSetup(repeat = 5, ramp(300).over(5 minute), "300 usr w/ 5 req in 5 mins") | |
val testSetUp = sequentialUserTest // <-- config selection (could be also done at runtime) | |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
While you can get the public and private IP address of your Amazon EC2 instance via the AWS Console, it may be extremely useful to query it from anywhere you can make an HTTP request, such a shell script. The operation is really simple, just make a GET request to the following URL from within your EC2 instance: | |
Local IP: | |
curl http://169.254.169.254/latest/meta-data/local-ipv4 | |
Public IP: | |
curl http://169.254.169.254/latest/meta-data/public-ipv4 | |
I often use this feature to pre-configure services and update configuration files, as in EC2 you get a new IP Address each time you reboot |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
// create an alternative method for getting a list of defined enums to avoid system creating a clone of the String array | |
// this is the .values() method | |
public enum Car { | |
TESLA, VOLVO, TOYOTA; | |
} | |
// normally what would happen | |
public static Car[] values() { | |
return (Car[])$VALUES.clone(); |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/* MAVEN TO GRADLE */ | |
- Navigate to directory where the POM is located | |
- Run gradle init | |
> this will convert the Maven build to Gradle build (new settings.gradle & one or more build.gradle files) | |
/* GRADLE TO MAVEN */ | |
- Add Maven plugin to build.gradle file | |
ex. | |
apply plugin: 'java' |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/* | |
Take note of length - it is used as a String[] property > strings.length AND as a method for a String | |
array element > strings[i].length(). | |
*/ | |
public Map<String, String> pairs(String[] strings) { | |
Map<String,String> map = new HashMap<String,String>(); | |
for (int i = 0; i < strings.length; i++ ) { | |
if (strings[i].length() == 1 ) { | |
Character first = strings[i].charAt(0); |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
What is the difference between "express": "^4.13.3" and "express": "~4.13.3" ? | |
What happens if I use `npm install <package> --save` instead of `npm install <package> --save-dev` ? |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#!bin/bash | |
yum install httpd -y | |
yum update -y | |
aws s3 cp s3://mywebbucket-cloudguru /var/www/html/ --recursive | |
service httpd start | |
chkconfig httpd on | |
OlderNewer